Process of making cement



1W0thawing I 1 titanic constituent,- b

. .rsieiiieeseig 2e, 192a I 0, new, or, wnsnmerom rn'rs'rax'croiijcowmnin.

j for CEMENTQZ I Tooll may-concern:

Be it that I, a citizen O- irtheUnited States, residm atv I v QWashington, in the District of Columbia,

" 6 have invented certain new and useful Improvements in Processes ofMaking Ge;

particularly applicab e and" economical in regions where titan ferousores and coke are i I bothexpensive, the titaniferous constituent wbeinintroduced otherwise than by the re-- duct1on of the mixture containing,titanic ore'as described in my said patent, involving necessarily theomlsslon of ironrecov- "ery,'as-wel1 as producin a cement of higher alime constituent from t at produced by the 3 process disclosed in saidatent 7 I The present process includes the use, as

one com onentof a. cement mixture, of an artificial y prepared titaniumcompound,

- either'a titanium silicate or a calcium titan-- ate 'or a mixture ofboth as distinguished from the naturaktitanic iron ore disclosed in saidpatent." v v This artificially prepared titanic compound is added, inproportions suitable to 4 give the final tenor in titanium oxide orother titanic compound desired, to a. cement mixture already' containingproper amounts 'of lime, alumina and s111ca.'

I The addition'of this titaniuin base may be madeeither beforeclinkeri'ng or fusion or during the *actual burning;-and the'finalproduct is in 'eitherrcase cooled and ground .to 'owder-to'iorm thecement.

's-i-anlexample,--in .ordertc .6 lime u-tan1eement1of "manufacture in arotary kiln, the Ifinalraw mixture may be composed @120 lbs. orlimestone, 15: its

resistance to chemia process which is;

make a high n pntm a mam 1a, "19st.- 1, Is -:1 .110.- eas'saslag.

vThe titaniferous slag mayfor examplebe the slag resulting from thefusion of the titaniferous iron ores and limestone. The result withthese three raw materials of. normal composition would be about 100'lbs. of titan cement, 'With a' composition ranging around lime 60%,silica 10%, titanic oxide 15%, alumina 10%.' I v The titanic oxide mayassume the form of an equivalent calcium titanate, exceeding By theuseof such a repared titanium compound sufficient titamc "oxide orcorresponding compound is introduced by the .process into the cementmixture, in'a' readilly' combinable form, to secure the increased nsity,and chemical resistance which are,

characteristic of all the titan cements,u.as compared withalumina'fce'ments, Portland cements, or any otherearlie-r types.

i The process herein disclosed is adaptable to thense'of either'a rotarykiln-or furnace,

toeit'her clinkering of fusion, and to the use of coke, coal,'electricity,"gas or oil as fuel. Italso permits the attainment of veryhighlime titanium cement compounds, which were diflicult to attain bydirect fusion of a limestone-titaniferous iron ore mixture tho thelowilime quick hardening titan cejmentsare prepared easily enough even'atrelatively low temperatures directly from the ore. The presentinvention however pro vides a new method of introducing a tit'a niumconstituentinto a normal cementmixture, with the advantages heretoforereferred to, and without the incidents attending the use of titaniferousiron ore and the necessity for example of using a blast furnace. I

I- claim:

1.. The process-of making cement containing a titanium constituent,comprising the addition to acement mixture, durin or be- 'fOI'QfUSlOIior cl1nkermg,of. a suita le 'pro portion of. an artificial tltaniccompound.

' .2.'.-The processof making cement containing I atitanium. constituent,comprising the 1 addition to anormal .cement'mlxture' of asuitabl'e'proportion'of m artificial co pound contaming titanium.

of {clayor bauxite, lbs of titaniferous 3. The process of making'cementcontaining a titanium constituent, comprising the addition to a normalcement mixture of a suitable proportion of an artificial compoundcontaining a titanium base.

4 The process of making cement relatively high in titanium comprisingthe addition to a cement mixture, during or before fusion or clinkering,of a suitable proportion of a slag resulting from fusing titaniferousiron ore and limestone.

5. The process of making cement containalumina and silica, a suitableproportion of an artificial compound containing titanium, and fusingor'clinkering'the combined mixture, and finally grinding the same.

6: The process of making cement containing a titanium compoundconsisting of adding to a calculated cement mixture containing lime,alumina, and silica, a suitable proportion of an artificial compoundcontaining titanium, durin the process of clinkering or fusin g themixture.

V vIn testimony whereof, I afiix my signature EDWIN o. EOKEL.

